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US20190019619A1 - Winding Arrangement With Fixed Winding Sections - Google Patents

Winding Arrangement With Fixed Winding Sections Download PDF

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Publication number
US20190019619A1
US20190019619A1 US16/068,770 US201616068770A US2019019619A1 US 20190019619 A1 US20190019619 A1 US 20190019619A1 US 201616068770 A US201616068770 A US 201616068770A US 2019019619 A1 US2019019619 A1 US 2019019619A1
Authority
US
United States
Prior art keywords
winding
sections
another
arrangement according
layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/068,770
Other languages
English (en)
Inventor
Tim-Felix Mai
Richard Sille
Steffen Weinert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Weinert, Steffen, MAI, TIM-FELIX, SILLE, RICHARD
Publication of US20190019619A1 publication Critical patent/US20190019619A1/en
Assigned to Siemens Energy Global GmbH & Co. KG reassignment Siemens Energy Global GmbH & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS AKTIENGESELLSCHAFT
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips

Definitions

  • the invention relates to a winding arrangement with a number of winding sections arranged on top of one another in the vertical direction, which are arranged with a spacing from one another and electrically connected to one another, forming a series circuit, wherein each winding section exhibits winding layers which have been wound over one another and which are mutually insulated and exhibit an electrical conductor.
  • the invention further relates to a method for producing a winding arrangement.
  • the invention relates furthermore to a transformer and to a choke with such a winding arrangement.
  • the aforementioned winding arrangement is known from EP 2 251 877 B1, for instance.
  • the winding arrangement shown therein consists of a series circuit of so-called disk-type windings which are arranged with a spacing from one another.
  • a strip conductor for instance, is wound together with an insulating film from the inside to the outside onto a shaping winding support and is retained thereon by the winding tension.
  • the previously known winding arrangement has the disadvantage that the winding sections which are retained on the support solely by the winding tension may slip, so that the electrically necessary minimum spacings between the windings are no longer maintained.
  • this object is achieved by the winding layers being firmly connected to one another via a layer-connecting means.
  • the invention achieves this object by winding sections being wound onto a winding support by winding of winding layers, said winding layers exhibiting mutually insulated electrical conductors, said winding layers being firmly connected to one another by a layer-connecting means, and each winding section being potted with an insulating material, and the winding arrangement formed in this way being heated for the purpose of curing the insulating material.
  • the winding arrangement according to the invention is provided with winding sections, the winding layers of which are firmly connected to one another via a layer-connecting means.
  • the layer-connecting means increases the mechanical stability of the winding sections.
  • a slipping of the winding layers after winding is therefore avoided.
  • any connecting means enters into consideration that is capable of connecting the winding layers bearing against one another to one another effectively, so that the winding layers remain dimensionally stable and do not slip.
  • the layer-connecting means is a cured resin compound.
  • the resin is, for instance, applied in the incompletely cured state—or, in other words, at the B-stage—onto both sides of the insulating film. After winding, the winding arrangement is cured, for instance by application of heat.
  • the resin is expediently an epoxy resin.
  • an insulating film which has been wound between the conductors of a winding section is impregnated or coated with the layer-connecting means.
  • the insulating film may have been impregnated or coated with the layer-connecting means on one—or, advantageously, on both—of its two sides. Consequently the film that has been provided with layer-connecting means on both sides bonds the conductors, between which it was wound, to one another.
  • the resin compound is configured to be at least partially punctiform.
  • a punctiform compound is also known in specialist circles as “diamond-dotted”; it can be produced easily and quickly and, in addition, exhibits high stability.
  • each resin compound is of punctiform design.
  • the winding sections are at least partially surrounded by a fixed winding insulator which consists of a fixed winding-insulating material.
  • a fixed winding insulator which consists of a fixed winding-insulating material.
  • the dielectric strength of the winding arrangement is increased.
  • Such a winding arrangement or dry-type-transformer winding is employed, for instance, as higher-voltage winding in a transformer or in a choke.
  • a lower-voltage winding is placed in the interior of the winding arrangement, through which, in turn, a leg of an iron core extends.
  • the iron core which is formed from iron sheets, has a lower magnetic resistance than air and serves for guiding the magnetic fields that are generated by the winding arrangement as higher-voltage winding and by the lower-voltage winding arranged in it.
  • the resin compound has been applied directly onto the winding insulation.
  • a resin layer has been provided.
  • the winding arrangement has been provided with retaining means which exhibit at least one retaining element which extends into winding sections arranged at least between two winding sections arranged side by side.
  • retaining means which exhibit at least one retaining element which extends into winding sections arranged at least between two winding sections arranged side by side.
  • Such a retaining means retains the winding sections, between which it extends, with a certain spacing from one another which is predetermined by reason of the desired dielectric strength of the winding arrangement.
  • the winding sections are at a high-voltage potential, so that a voltage falls between the winding sections.
  • each retaining element takes the form of a flat insertable strip.
  • a flat insertable strip can be wound between the winding layers particularly easily and therefore inexpensively in the course of the winding of the winding sections, and can be connected to said winding layers.
  • each retaining element consists of a resin reinforced with glass fibers.
  • the resin of the retaining element is, for instance, the same resin that is employed for the winding insulation.
  • At least one foot element has been provided which has been connected to a winding section and adapted for supporting the entire winding arrangement.
  • the foot element enables the unworked piece of the winding arrangement to be set down, and consequently enables a stationary potting.
  • each foot element exhibits an insulating-material section that consists of an electrically insulating foot-insulating material.
  • the insulating-material section provides the necessary electrical insulation between the foot end at ground potential and the winding end of the foot element connected to the winding section.
  • each winding section and each foot element are at least partially surrounded by a winding insulator which consists of a fixed winding-insulating material, the coefficient of thermal expansion of said winding-insulating material corresponding to that of the foot-insulating material. In this way, formations of cracks in the winding insulator are avoided.
  • Each winding section is advantageously peripherally closed, the winding sections being arranged in alignment with one another.
  • the winding arrangement is therefore of hollow design inside, so that the accommodation of a lower-voltage winding and/or of a core leg has been made possible.
  • At least one retaining element is introduced between the winding layers in the course of winding, so that it extends between at least two winding sections.
  • the winding arrangement is preheated after the introduction of the retaining elements but prior to the curing of the insulating material.
  • the prepregs cure, so that a mechanically stable winding arrangement has been provided which can be potted when stationary without winding support. This enables the formation of a winding insulation with a thicker wall, particularly on its inside, so that higher voltages can be applied to the winding arrangement with the same dimensional design.
  • FIG. 1 shows an embodiment of the winding arrangement according to the invention in a perspective view
  • FIG. 2 shows an embodiment of the method according to the invention
  • FIG. 3 shows a more detailed view of an insulating film with layer-connecting means.
  • FIG. 1 shows an embodiment of the winding arrangement 1 according to the invention in a perspective representation. It can be discerned that the winding arrangement 1 exhibits disk-type windings 2 a , 2 b , . . . , 2 n arranged vertically above one another—that is to say, here, in the axial direction—which are electrically connected to one another in series.
  • the disk-type windings 2 a are fastened to one another via retaining means and are retained with a spacing from one another.
  • the retaining means are provided with the retaining elements 4 which have been wrapped into the winding sections 2 a , 2 b , 2 n and connected to them in planar manner. By reason of the retaining means 4 , the electrically necessary spacings can be maintained.
  • the unworked piece of the winding arrangement 1 shown in FIG. 1 is embedded completely into a fixed winding insulator which consists of an expedient winding-insulating material, for instance an expedient casting resin.
  • a fixed winding insulator which consists of an expedient winding-insulating material, for instance an expedient casting resin.
  • the unworked piece of the winding arrangement 1 shown in FIG. 1 is arranged in a casting mold, and subsequently the liquid winding-insulating material—for instance, an epoxy resin with additives and fillers—is supplied in liquid form.
  • the curing of the winding-insulating material is effected under heat, so that a series circuit of disk-type windings 2 a , 2 b , 2 n , embedded completely in a fixed winding insulation, has been provided.
  • the winding arrangement produced in this way then serves, for instance, as higher-voltage winding of a transformer.
  • FIG. 1 the outside of the disk-type windings 2 a , 2 b , . . . , 2 n is shown.
  • this outside exhibits layer-connecting means 5 in the form of rhombic regions which have been coated with a resin at a B-stage.
  • Resin at a B-stage is a not yet fully cured resin, which therefore still exhibits open junctions which are available for a later complete polymerization. At this B-stage the resin exhibits adhesive properties.
  • FIG. 2 shows an embodiment of the method according to the invention, in the course of which the winding arrangement according to FIG. 1 is produced. It can be discerned that disk-type windings 2 a and 2 b are being wound onto a winding support 15 .
  • Each disk-type winding 2 a and 2 b is composed of winding layers 3 which in the course of winding are wound from the inside to the outside and in the process enlarge each winding section in the radial direction.
  • Each winding layer 3 is provided with a strip conductor 7 which is insulated from the strip conductor of the underlying winding layer 3 by an insulating film 6 .
  • the insulating film 6 in this embodiment is realized as a prepreg with layer-connecting means 5 coated over the full surface on both sides.
  • the retaining means which consist of a flat insertable strip 4
  • the flat insertable strip 4 consists of glass fibers which have been impregnated with a resin that is likewise at the so-called B-stage—that is to say, in other words, is not yet fully cured.
  • the winding arrangement 1 is preheated, so that the resin at the B-stage 5 on the film 6 and also the prepreg 4 cure, and in this way a mechanically stable connection has been provided both between the film 6 and the metallic strip conductors 7 and also between the film 6 and the retaining element 4 or the strip conductor 7 .
  • the winding support 15 can be removed, so that a winding-support-free self-standing winding arrangement 1 has been provided, in which disk-type windings 2 a , 2 b , . . . , 2 n are arranged vertically above one another in the axial direction with a spacing from one another.
  • FIG. 3 illustrates an embodiment of the layer-connecting means 5 according to the invention on a film 6 which exhibits rhombic regions in which resin 5 at the B-stage has been applied in punctiform manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Coils Of Transformers For General Uses (AREA)
US16/068,770 2016-01-15 2016-12-15 Winding Arrangement With Fixed Winding Sections Abandoned US20190019619A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016200477.8 2016-01-15
DE102016200477.8A DE102016200477A1 (de) 2016-01-15 2016-01-15 Wicklungsanordnung mit festen Wicklungsabschnitten
PCT/EP2016/081116 WO2017121569A1 (fr) 2016-01-15 2016-12-15 Ensemble bobinage constitué de parties d'enroulement fixes

Publications (1)

Publication Number Publication Date
US20190019619A1 true US20190019619A1 (en) 2019-01-17

Family

ID=57680234

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/068,770 Abandoned US20190019619A1 (en) 2016-01-15 2016-12-15 Winding Arrangement With Fixed Winding Sections

Country Status (7)

Country Link
US (1) US20190019619A1 (fr)
EP (1) EP3378074A1 (fr)
CN (1) CN108541330A (fr)
BR (1) BR112018014218A2 (fr)
DE (1) DE102016200477A1 (fr)
RU (1) RU2699075C1 (fr)
WO (1) WO2017121569A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018213661A1 (de) 2018-08-14 2020-02-20 Siemens Aktiengesellschaft Wicklungsanordnung mit Feldglättung und Armierung

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU16773A1 (ru) * 1926-09-11 1930-09-30 и Гальске Сименс Трансформатор высокого напр жени
DE1816127B1 (de) * 1968-12-20 1970-03-12 Matsushita Electric Ind Co Ltd Selbstbindender,oberflaechenisolierter Folienleiter
DE2033734A1 (de) * 1970-07-08 1972-01-20 Transformatoren Union Ag Verfahren zur Fertigung von Wicklungen
DE2051883B2 (de) * 1970-10-22 1976-07-29 Lepper-Dominit Transformatoren Gmbh, 5340 Bad Honnef Wicklung fuer trockentransformatoren und verfahren zu ihrer herstellung
DE2241975A1 (de) * 1972-08-25 1974-03-07 Transformatoren Union Ag Ein- oder mehrlagige aus rechteckfoermigen leitern bestehende transformatorwicklung
US4204087A (en) * 1976-11-22 1980-05-20 Westinghouse Electric Corp. Adhesive coated electrical conductors
DE3429809A1 (de) * 1984-08-13 1986-02-20 Transformatoren Union Ag, 7000 Stuttgart Wicklungsanordnung fuer transformatoren und drosselspulen mit in giessharz vergossenen wicklungen
DE19809572C2 (de) * 1998-03-05 2000-06-21 Siemens Ag Gießharz-Transformator
DE19951709A1 (de) * 1999-10-27 2001-05-03 Alcatel Sa Elektrischer Leiter mit rechteckigem oder quadradischem Querschnitt
DE102004016197A1 (de) * 2004-04-01 2005-10-20 Abb Technology Ag Zuerich Wicklung für einen Transformator oder eine Spule und Verfahren zur Herstellung
US7719397B2 (en) * 2006-07-27 2010-05-18 Abb Technology Ag Disc wound transformer with improved cooling and impulse voltage distribution
DE102007053685A1 (de) * 2007-11-10 2009-05-14 Abb Technology Ag Herstellungsverfahren für eine mehrlagige Transformatorwicklung mit Isolationsschicht
PL2251877T3 (pl) 2009-05-14 2013-08-30 Abb Schweiz Ag Sposób wytwarzania uzwojenia krążkowego
CN201868200U (zh) * 2010-11-24 2011-06-15 广东海鸿变压器有限公司 立体卷铁心变频调速干式整流变压器三相线圈结构
RU2482564C2 (ru) * 2011-06-07 2013-05-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Трехфазный трансформатор
CN104425112B (zh) * 2013-09-04 2017-01-18 台达电子企业管理（上海）有限公司 变压器

Also Published As

Publication number Publication date
CN108541330A (zh) 2018-09-14
DE102016200477A1 (de) 2017-07-20
RU2699075C1 (ru) 2019-09-03
WO2017121569A1 (fr) 2017-07-20
BR112018014218A2 (pt) 2018-12-11
EP3378074A1 (fr) 2018-09-26

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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAI, TIM-FELIX;SILLE, RICHARD;WEINERT, STEFFEN;SIGNING DATES FROM 20180518 TO 20180523;REEL/FRAME:046383/0709

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Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG, GERMANY

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